Moving form for concrete construction



H. L, COPELAND.

MOVING FORM FOR CONCRETE (FONSTRUCTION.

APPLICATION FILED SEPT. 2!, 1920.

. Patented 0st, H, 1921..

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H. L. COPELAND.

MOVING FORM FOR CONCRETE CONSTRUCTION.

APPLICATION FILED SEPT. 21, 1920.

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flW/W flaw/w 60 ATTOR YS.

HARRY I]. CGPELAND, OF WALTLA WALLA, WASHINGTON.

MOVING FORM FOR CONCRETE CONSTRUCTION.

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Specification of Letters Patent.

Patented "Blot. illl, T921.

Application filed September 21, 1920. Serial No. 411,696.

ing Forms for Concrete Construction, of

which the following is a specification.

This invention relates to forms for concrete construction, and has for its object to provide a means for the continuous molding of plastic concrete.

A further object is to provide a means whereby lateral extensions such as floors, cornices, moldings, ribbons, etc.,may be con structed, the reinforcing material placed in position and concrete poured while the wall is still plastic, to form a homogeneous mass.

A further object is to provide a means whereby one portion of the form is constantly in substantial contact with the structure, to maintain true alinement thereof, while the opposite portion of the form is elevated above the level of the work, to provide for the construction of the lateral extensions.

A further object is to provide a means whereby corbels may be formed, also whereby beams may be oonstructed, and girders embedded in the plastic concrete during construction.

A further object is to provide a means which, while adaptable to the above mentioned purposes, is adaptable thereto without interference to the progress of the moving forms.

With these and other objects in View, ref erence is now had to the accompanying drawings in which- Figure 1 is a perspective view of the device showing its application to lateral work and means for receiving beams, etc.

Fig. 2 is an end elevation of the form showing one side extended.

F ig. 3is a similar view to Fig.2, but with the opposite side extended.

Fig. 4 shows an extension on both sides of the form. p l 1 Fig. 5 is a similar view to Fig. 4 with one extension removed."

Fig. 6 is a side elevation and shows provisions for forming corbels and beams inte ral with wall.

ig. 7 is a section on line 7--7 of Fig. 6. Fig. 8 is a section on line 8-8 of Fig. 6; and

Fig. 9 shows the adaption of the device to forming bands and cornices.

In the drawings like numerals refer to hke parts throughout and the numeral 1 refers to thefcomplete form which consists of a yoke 2 which straddles the forms, of which there are two portions, an exterior portion 3 and an interior portion l. These portions form the guides for the wall 6 and are maintained in proper alinement with the work by the stringers 7 and the yoke 2, which supports the forms through the stringers 7 towhich the yokes are-suitably fastened.

The top piece of the yoke carries a jack 8 which, together with the yoke, the stringers 7 and platform 9, from which the concrete is deposited,'are of common use and will not be cla1med. q

The lack operates on a jack rod 10 which is embedded in the concrete and is carried up with the work in the usual manner.

The forms 3 and 4 are designed with one of the forms extended below the other, or with a means for extending one of the forms below the other, consisting of an apron 11 which is removably attached to the forms in any suitable manner, one means of attachment being shown herein consisting of a cleat 12 which is conveniently fastened to the form and of a length to pass the apron and be screwed thereto.

The apron obviously will be made in sections and naturally only such sections will be used as are necessar Figs. 3vand 5 show the apron as adapted to forms whose lower edge is equal as in Fig. 5, and whose lower edge is unequal, as in Fig. 3. In Fig. 5, with the lower edges of the forms equal, the addition of the apron 11 to either of the forms extends that form below its companion form, and the application to the work of this style of form is shown in Fig. 1 where the apron rests against the wall to support the form, while the interior or companion form is raised above the floor 13 to enable that part of the construction to be formed homogeneously with the wall,

which is then carried upward in the course.

of the work.

In Fig. 3 the same principle is involved, and while more simple in operation than that above described, is restricted to extensions of less vertical dimensions; as in Fig. 5 extensions the full width of the apron may be constructed, while in that shown in Fig. 3

it is obvious that only one half of the apron may be effective; but in that shown in Fig; 3 the removal of the apron shortens the side, from which the apron wasremoved, below its companion side, and thus lengthens the opposite side without adding an apron thereto as is necessary in the style shown in Fig. 5. This difierence may be remedied, however, by an apron of greater vertical dimension. V

To provide for'the construction of corbels, beams,etc. the forms are provided with a trap or aperture 1a which during wall construction is closed by a suitable closure 15.

The aperture is made in the form from the lower edge thereof which leaves the lower-edge ofthe aperture open; thatis, destroys that (lower) part of the perimeter of the aperture, so that the form may be freely raised without meeting an obstructing protuberance such as the corbel, beam, etc. would form after its construction. The protuberances are plainly shown in Figs. 7 and 8 respectively. n

The adaption or this device to ribbon cornices and the like, is clearly shown 1n Fig. 9. In this figure I show a form of the same style as shown in Fig. 3, 2'. e., with one side normally shorter than the other. As the ribbon is relatively wide the longer form 4 has been extended by an apron to catch the old. work, shown below the dotted line in Fig. 9, and the shorter form is extended by a built-out apron and the suitable additional form-work 16.

This additional form work is obviously necessary in any. concrete construction and -W1l3h any forms as, 1n the beam 17 a form 18 required to maintain thecontour thereof, as is alsothe case in the corbel 18; in these no form is shown as it is deemed unnecessary. A form is shown in Fig. 1 under the floor 13 to show that themoving. form does not obstruct the building of other forms against the 1 finished wall.

In operation the moving form 1 is lined up on the work, the jack rods placed, the pouring commenced. vNow as lateral pr0 jections are encountered," the aprons are brought into play,-and whether the projections are from one side only, or from both sides as shown in Fig. 2, the apron provides a me'ans for forming a homogeneous monoinvention is the maintained rigidity of the .moving form, due to the fact that at all above the concrete to provide room to lay floors, etc., and the whole form was supported on the jack rods, there was grave danger of a movement of the forms out of true, which I have overcome in my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. In a moving form, in combination with a yoke and jack, a form, comprising two portions of equal length, connected by said yoke, one of said portions extendible below the other portion and said portions containing apertures.

2. In a moving form, in combination with a yoke and jack, a form, said form composed of two portions, an exterior portion and an interior portion, said portions of unequal lengths, a means for extending the shorter portion below the longer portion, said shorter portion containing apertures normally closed.

3. In a moving form, in combination with a yoke and jack, a form provided with stringers and rigidly attached to said yoke, said form consisting of two portions, and removable means for extending said portions, said portions containing closable apertures.

l. In a moving form, the combination of a yoke and jack, a form consisting of two portions, and means for extending one of said portions below the other, said portions containing apertures in the lower edge thereof.

5. In a moving form, in combination with a yoke andjack, a form, said form consisting of two portions, aprons removably attached to said portions, and said portions containing apertures therein.

6. In a moving form, in combination with a yoke and jack, a form, said form consisting of two portions, an apron removably attached to one of said portions, and interchangeable upon either of said portions, and said portions containing apertures therein.

7'. In a moving form, in combination with a yoke and jack, a form, said form consisting of two portions, of unequal lengths, connected by said yoke, the shorter of said por tions extendible below the other, said portions containing apertures therein, each of said apertures having the lower perimeter thereof removed to provide free movement of the form in an upward direction, and away from a protuberance.

In testimony whereof I aflix my signature. 

